Medical instrument.



7 O 9 1 6 Fm U A D E T N E T A P I T N E. m mR M Gm L WA w D E M 2 1 1 26 8 N APPLICATION FILED FEB. 13, I907.

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THE NORRIS PETERS c JAMES S. COLLINS, OF CARLINVILLE, ILLINOIS.

MEDICAL INSTRUMENT.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed February 13, 1907. Serial No. 357,175-

To all whom it may concern:

Be it known that I, JAMEs S. OoLLrNs, a citizen of the United States,residing at Carlinville, Illinois, have invented a certain new anduseful Improvement in Medical Instruments, of which the following is afull, clear, and exact description, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which Figure 1 is a side elevation of my improvedinstrument. Fig. 2 is a front elevation of same. Fig. 3 is a crosssectional view taken on the line 3-3 of Fig. 1,

and Fig. 4 is a detail view of the wings which form the expansible head.

This invention relates to medical instruments and particularly to aninstrument called intra uterine pessary which is used for relievingpainful menstruation.

The object of my invention is to provide an instrument of the characterdescribed which is so constructed that it can be inserted in the canalleading from the uterus without causing great pain to the patient andwhich will not be liable to become accidentally dis placed after it hasbeen inserted.

The instrument which I have herein shown as embodying the preferred formof my invention consists of a hollow shank adapted to lie in the canalleading from the uterus and provided at its upper end with an expansiblehead that lies inside of the uterus when the instrument is in position,said head in its expanded condition being of greater diameter than thecanal so that the instrument cannot be accidentally displaced. The headpreferably consists of a plurality of wings pivotally connected to thehollow shank, and mounted inside of said shank is a member for actuatingsaid wings to expand or enlarge the head, means being provided forvarying the degree of movement imparted to said wings so that the sizeof the head can be changed.

Referring to the drawings, 1 designates the hollow shank having twowings 2 pivotally connected to the upper end thereof, the outer faces ofsaid wings being slightly convexed both longitudinally and transverselyso that when the wings are in their closed position, as shown in fulllines in Fig. 2, an approximately oval shaped head will be formed.

The upper portion of the shank is bifurcated to produce two arms 3 towhich the wings 2 are pivoted, and reciprocatingly mounted inside of theshank is a member 4 for actuating the wings to move them into their openor expanded position as shown in broken lines in Fig. 2, said memberbeing of non-circular shape in cross section so that it cannot turn orrotate in the shank.

The upper end 5 of the member 4 is wedge shaped and this wedge isadapted to pass between lugs 6 on the in ner sides of the wings adjacentthe pivots thereof and thereby separate said wings so as to enlarge orexpand the head. At the lower end of the shank 1 is a circular base 7having connected thereto a catch or retaining bar 8 that cooperates withnotches 9 in the lower end of the member 4 for holding said member inits elevated position. The member 4 is preferably provided with aplurality of notches as shown on the drawings so that said member can beadjusted in several positions to vary the degree of separation of thewings 2.

Having thus described the invention, what we claim as new and desire tobe secured by Letters-Patent is:

An instrument of the character described, comprising a curved shankprovided at its lower end with an integral circular base 7 and having anon-circular bore extending therethrough, arms 3 at the upper end ofsaid shank, said arms being bifurcated, wings 2 having their inner endsarranged between the bifurcations of said arms and being pivotallyconnected thereto. lugs G on said wings, a member slidingly mounted inthe bore of said shank and being of the same shape in cross section assaid bore, a wedge at the upper end of said member .which passes betweenthe lugs on the wings to separate them. and a retaining bar 8 on thecircular base which cooperates with notches in the sliding member toretain it in adjusted position.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses, this ninth day of February 1907.

, JAMES S. COLLINS.

Witnesses ALEXANDER I-I. BELL,

FRANK W. BURTON.

